Former Facebok exec Randi Zuckerberg introduced a fashion and accessories line, known as #265, at a party celebrating the new luxury wing at the Westfield Valley Fair Mall in San Jose on Nov. 1, saying that “it’s through high tech that my partners and I can make fashion.”

But it’s high tech that is making luxury fashion possible at the mall, with the continuing growth of Silicon Valley responsible for creating enough wealthy customers to afford the wares at luxury shops such as Prada, Ferragamo, Burberry, Louis Vuitton, Tiffany, Cartier and the first Northern California locations of Miu Miu and David Yurman, just a few of the 18 high-end purveyors among the mall’s 250 stores.

One store proprietor said the mall had surpassed sales per square foot of South Coast Plaza in Orange County, among the state’s most profitable malls per square foot ( The Grove in Los Angeles or Fashion Valley Mall in San Diego are the top-ranked, depending on published reports.)

Caran Sealey, the mall’s marketing director, declined to release sales figures but said the aim has been to make Westfield Valley Fair “a destination” in the region.

The event was called “Fashion DuJour,” sponsored in part by Du Jour magazine. Several hundred guests sipped Champagne and nibbled on caviar while wandering the mall looking at Emmy-nominated costume showcase — apparel from shows such as “Mad Men” and “Downton Abbey” — on mannequins.

A live design competition pitted students from the Fashion Institute of Design and Merchandising against one another, giving them an hour or so to drape material on a dress form and create full-length gowns worthy of a walk on the red carpet. A panel of judges awarded Angela Avanesyan the winner of a $2,500 cash donation to her studies, as well as a merchandising vitrine in the mall for one year to show off her creations to the mall’s 16 million annual visitors.

And capping the evening off was a short panel discussion on fashion with Zuckerberg, celebrity stylist Jeanann Williams, Rumi Neely, founder of Fashiontoast, and Athena Calderone, founder of Eye-Swoon.com that was moderated by Zanna Roberts Rassi, senior fashion editor at Marie Claire magazine.

Zuckerberg, whose book “Dot Complicated” — about our tangled, wired lives, hits the stores Nov. 5, has also partnered with the South Bay’s Angelina Haole, a fashion designer for Franco Uomo, and Hasti Kashfia, a Bay Area-based celebrity stylist, to create a fashion line called #265. The name comes from the birth months of each of the founders — February, May and June.

It features T-shirts, tote bags, cell phone covers and bracelets. The apparel is designed with tech life in mind, with programming-inspired 1′s and 0′s as a clothing motif (“If you know binary code, you’ll get it,” Zuckerberg said.”

Bracelets are leather bands with sayings such as “Go outside, the graphics rock,” to wittily suggest there is more to life than tapping on the keyboard of an electronic gadget, the founders said.

“Our goal is that when someone says, ‘You look like a geek,’ it’s a compliment,” Zuckerberg said.

London or Paris stylistas may not be early adopters of this fashion trend, but there is hope. From all economic signals, it’s not the meek who shall inherit the earth, but the geeks.